Shen Lingxi, a genius disciple of the Qingyun Sect, is framed by her senior sister Su Qingyao and her fiancé Ling Zhao, who conspire to steal her ancestral inheritance token. After being falsely accused, her meridians are sealed, and she is exiled to the perilous Guixu Secret Realm. In truth, she is a descendant of the ancient Guardians of the Ley Lines, and the seal has not destroyed her foundation. Inside the secret realm, she encounters Mo Heng, a reclusive Guardian of the Ley Lines. With his help, she discovers opportunities to gradually unlock her powers and gathers evidence to expose the conspiracy. After clearing her name, she is hunted by mysterious forces coveting her Guardian bloodline. Eventually, Shen Lingxi finds her mother, who is trapped within the secret realm, and comes to understand the true meaning of protecting the ley lines and maintaining balance. Together with her companions, she takes on the mission of safeguarding the world's ley lines.